Almandine reflectance spectrum, 20±2°C, Pejcic <i>et al.</i> 2021 (EP2021-1148)

Almandine reflectance spectrum, 20±2°C, Pejcic et al. 2021 (EP2021-1148)

Description	SWIR-MIR-TIR reflectance spectrum of Almandine [Fe2+3Al2(SiO4)3] in specimen 'M1335' (CSIRO - C. Laukamp).
Reference	Pejcic et al. 2021 (EP2021-1148) Pejcic, Bobby; Shelton, Tina; leGras, Monica; Laukamp, Carsten; Francis, Neil; Lau, Ian. Mid infrared spectral library. Perth: CSIRO; 2021. csiro:EP2021-1148. https://doi.org/10.25919/5b6n-n462
Material	Almandine [ Fe^II₃Al₂(SiO₄)₃ ] Garnet specimen from Idaho, USA © Photo by Chip Clark, via Smithsonian National Museum of Natural History
Specimen	M1335 Almandine [CSIRO - ARRC Collection], Broken Hill, NSW, Australia
Specimen temperature	20±2°C
Technique	Reflectance
Instrument	Bruker Vertex 80v FTIR spectrometer
Det. technology	HgCdTe (MCT) photodetector, LN2 cooled
Channel count	3835
Energy range	0.074378 … 0.929505 eV
Intensity range	0.044825 … 0.291143 absolute reflectance

Nominal composition of Almandine [ Fe^II₃Al₂(SiO₄)₃ ].
Element	Atoms	At%	Wt%
Fe	3	15	33.7
Al	2	10	10.8
Si	3	15	16.9
O	12	60	38.6